VS 2010 Nothing Keywords During Declaration?
Oct 15, 2011
i'm used to be a VB6 user and started move on to VB.NET few days ago and i'm still quite new to its new syntax.Today i came across there is a object declaration with the 'Nothing' keyword follows at the end and what it actually means? Dim l_Active As AvsIdentityType = Nothing
As i know Nothing keyword is usually used to release the instance to the object after we used it but why it is used in the declaration statement?BTW, the 'AvsIdentityType' is a public structure.
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Mar 27, 2012
I have a requirement to search large piles of text for keywords
The "keywords" are known in advance - but the number is variable.
The text is large - I've had 50000 byte strings in tests already...
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Jun 21, 2011
I got problem regarding declaration of dynamic runtime array declaration Here is my code
[Code]...
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Apr 25, 2010
I am building a program that strips out certain keywords from a much larger file. I am using code that .paul. provided in a different post, but I can't get it to work correctly. Here is the code that I am using: [code] Basically, the first match will appear in textbox2, but no other matches appear after that. I put a breakpoint at the For Each loop and checked out the locals. I am showing 2,502 matches for the variable "match." I just now put another breakpoint in there and I can see that it is stepping, but nothing is recorded.In the archive is a file named debout.txt. This file should be used for the testing.
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Dec 16, 2009
What is the appropriate declaration such as "ValueChanged" or "Click" for a NumericUpDown that will execute the code when I press enter. I already know that setting the "AcceptButton" property of the main form to a default button will not work, especially if I want a different button to be selected depending on which control I give focus.
PS: Is the syntax any different from Visual Basic 2010 Express than it is on Visual Studio 2012 RC (running in Visual Basic Mode)?
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May 19, 2011
In the following two code snippets, the code does the same thing, when I tested this.
Dim test As New Class1 Dim test As New Class1() Do the parantheses make a difference in some way? Is there an explanation of this in the msdn library?
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Jan 4, 2011
I've been programming for many years in many languages and I've seen the variable declarations conventions change. With VS 2010 I've noticed you don't have to declare the variable type. I work alone so I can use any method I want. But, someday I may want to sell some of my code so I would like to keep my programming conventions current.
In VS 2010 which of these would be considered the best convention?
Dim srtFirstName = "Bob"
Dim strFirstName As String = "Bob"
Dim FirstName = "Bob"
Dim FirstName As String = "Bob"
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May 13, 2009
In VB.NET, you can surround a variable name with brackets and use keywords as variable names, like this:
Dim [goto] As String = ""
Is there a C# equivlent to doing this?
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Jun 24, 2009
Why does VB have more LINQ keywords than C#?
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May 19, 2009
Get web sites keywords
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Oct 5, 2011
I have a question here. I'd like to develop a vb.net program to run thru all source code in a folder to look for certain strings.my initial thought is to create an .ini file then program will read the strings then start searching in the source code for the strings entered.
the final output will be an excel sheet, stating the filename and the line number.
is this a good way to do it? if yes, can i ask for a skeleton program?if no, any other way?
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Sep 17, 2011
What im trying to get is when a button is pressed, it looks through a textbox and highlights the keywords. I found this:
Dim srch As String = "1"
Dim a As Integer = TextBox1.Text.IndexOf(srch)
TextBox1.Select() 'set focus to control
[Code]....
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Mar 18, 2011
Im just wondering how i can achieve the following, this is for my own learning. Im going to be passing an XML file to VB.net and im hoping to pick out keywords from within the XML file is that possible?
So say the XML file had words such as "hello" "Today" "Next Week"
how can i possibly pick these out and store them in a varible?
I can do the first bit i.e passing the XML file in reading it etc, but im curious on the second part?
Can any one help me or if any one knows any good tutorials and locations please do let me know.
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Dec 26, 2009
I wanted to make a that searches a web page(ex: wikipedia.com) for certain keywords from textbox?
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Nov 22, 2009
How would I make a program that would search through a .txt file, and find certain predetermined keywords. Basically, I have a very simple keylogger on my son's laptop to keep an eye on him. My hope is that I would make a program that would go through the .txt file, and if one of the keywords is found, then I would have the program execute a little something I have cooked up to warn to stop. The only problem is, I do not know how to search through the .txt file.
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Jul 18, 2011
We have users to type in Business Requirement in a text box.For instance : DOB Field is mandatory in Service Request Screen.
I am planning to define all the keywords in my code and once search button is clicked it should look for the keywords and throw a msgbox with number of keywords found.
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Feb 24, 2012
Any code snippet vb for searching key words like name or id no. On my database connected with my vb form application?
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May 17, 2010
In what scenarios would one use the MyBase and MyClass keywords in VB.NET?
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Dec 2, 2010
I'm attempting to recreate a form in Crystal Reports, under VS2010, after a form created under VS2008 stopped working.I have reached a point where I am trying to copy the following function from the old form to the new:
Shared myVariable As String
myVariable = {myTable.myColumnName}
formula = ""
In the original function editor, the words "Shared" "As String" and "formula" are highlighted in blue as keywords.In my new version of the report, only "Shared" is highlighted as a keyword. When I try and save the function, I am told it contains an error. This error is reported as: "A variable type (for example, 'numberVar') is missing."
The formula works on the original formula workshop. Why not now?
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Dec 13, 2010
I'm trying to execute an sql statement in vb.net to an Access database, I am escaping the reserverd word using square brackets []. This has worked in all my SELECT statements within the program.
The reserved word is level
But the SQL statement below fails saying
Syntax error in INSERT INTO statement.
If I directly copy the statement and execute this in Access it works fine
datalayer.getDataTable(String.Format("INSERT INTO users (username, password, [level]) VALUES ({0}, {1}, {2})", username, password, level))
The above statement works if I remove [level] and replace this with another column name.
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Jan 2, 2010
I have a search page, which iam using to search the database fields which holds the technical articles. The fields that iam searching are varchar(max).
Everything is fine..., I want to show the results with the first found instance of searched keywords in bold and some 70 to 100 chars before and after.
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May 4, 2009
i got a function that search for database data, is it possible that i make it search the nearest words or keywords? which mean if d name is TEST, n i key in TE then it will show those name wit TEST TESS TSST? [Code]
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Jun 11, 2011
If someone types in something like "red", I'd like the word's font color to become red. I tried something like this:
Dim red As String = "red"
Dim fnt As Font = New Font("Microsoft Sans Serif", 8.25)
If RichTextBox1.Find(red) > 0 Then
For Each _str In RichTextBox1.Text
Dim my1stPosition As Integer = RichTextBox1.Find(red)
RichTextBox1.SelectionStart = my1stPosition
But I dislike the highlighting-type approach.
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Jun 22, 2010
Why did they choose to add a new keyword AndAlso, instead of just changing the functionality of the existing And keyword?
Why would one want to use And, instead of AndAlso anyway?
Is it not just increasing the number of keywords unnecessarily?
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Aug 4, 2011
I am in the process of creating a program, using Visual Basic Express, for a physics professor who has recently had to rename all 1500 questions for his course. I created a database that has the old names, new names, and the entire contents of each question. The program seemed an easy enough idea, but has proved to be very difficult for me. I am new to programming (this is only my third go at it) and have searched for an answer to my problem for at least 20 hours, and have yet to find anything that will work for what I need.
What I would like is to have a text box in which he can type in a keyword (such as "Sun", "ISS", "Force", etc) and for the program to search throughout the entire "questioncontents" column and pull out any questions that contain those words into the datagrid. As of yet the closest I have gotten is for it to search the first word of the column, which is not very useful since most of them start with "The". I had also thought of creating several keyword columns and then just having it search through those, but I couldn't figure out how to apply the filter to multiple columns.
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Jun 15, 2010
I am in charge of developing a searchable database which should allow users to search for any key term in every fils content in a folder. Note that I need to search for filescontent, not file name. Right now, users usually have to searchfor every file to look for particular filecontents with any key terms.
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Oct 23, 2009
I am trying to decode yEnc data using the component found here:[URL]...It all converts fine, except for Line 173 of Decoder.cs which contains the c# keyword "unchecked".Without using unchecked I get an OverflowException.What is the correct way to implement this in VB?
[Code]...
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Dec 13, 2011
I know it sounds strange but let me it explain. It has a purpose, but really all I'm looking for is the item with the most duplicates.I know it's possible and I've had a few ideas already, though none were successful or practical.What I'm doing here that requires this is creating an intuitive search for clients in a database. You type in a single field and click search. Behind scenes each keyword broken down from the single input field is searched through the table of clients, hitting each column and returning matches. the results are large in numbers, but truly it's the client that appears the same number of times as there are keywords.
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Feb 11, 2009
How can I exclude a common keyword like "a,the,is,or.. etc.." from my search query ? If you do a search in Google or other search engine it says "the" is a very common word, and was not included in your search.Is there a list somewhere that I can get all the common keywords that need to be excluded from the search query?
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Jul 29, 2011
I have a small code and i want to highlight not only one found item in listbox but to highlight all items found under typed keywords.
Example: i typed vb.net programming and i wanna to find it all keywords under these names and highlight only those sites and put those keywords in textbox2 from textbox1.
I want like this:
Here is the code.
For i = 0 To ListBox1.Items.Count - 1
If ListBox1.Items(i).ToString.ToLower.Contains(Trim(LCase(TextBox1.Text))) Then
ListBox1.SelectedIndex = i
[Code]....
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